source: trunk/AIR-BOOT/SOURCE/REGULAR/OTHER.ASM@ 8

Last change on this file since 8 was 8, checked in by kiewitz, 23 years ago

Added AiR-BOOT Images and support for other languages.
Note: This comment was created after rebuilding the repo. [2011-07]
File size: 6.3 KB
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1
2; Disclaimer:
3;=============
4; The sourcecode is released via www.netlabs.org CVS *ONLY*.
5; You MUST NOT upload it to other servers nor republish it in any way.
6; The sourcecode is still COPYRIGHTED and NOT YET RELEASED UNDER GPL.
7; It's (c) Copyright 1998-2002 by Martin Kiewitz.
8; You may recompile the source and do *PRIVATE* modifications, but please keep
9; in mind that modifying this code needs at least *some* assembly skill. If
10; you mess up your system, because you needed to hack your way through, don't
11; blame me. Releasing a customized version of AiR-BOOT, selling it in any form
12; or reusing parts of this source is *PROHIBITED*. Ask me, if you have some
13; idea about new functionality *before* developing the code, otherwise I will
14; definitely reject it. Also please accept, that I have some basic design
15; rules on AiR-BOOT and I will maintain them at all costs, so this won't get
16; another GRUB.
17
18;---------------------------------------------------------------------------
19; AiR-BOOT / OTHER ROUTINES
20;---------------------------------------------------------------------------
21
22; In: DS:SI - Pointer to begin of string
23; CX - Len of string
24; Out: CX - Supposed real len of string
25; Zero Flag set if nul string
26; Destroyed: None
27GetLenOfName Proc Near Uses ax si
28 add si, cx
29 dec si
30 GLON_NameLoop:
31 mov al, ds:[si]
32 dec si
33 cmp al, 32
34 ja GLON_EndLoop
35 dec cx
36 jnz GLON_NameLoop
37 GLON_EndLoop:
38 or cx, cx
39 ret ; return supposed len
40GetLenOfName EndP
41
42; In: DS:SI - Pointer to NUL-terminated string
43; Out: CX - Length of string
44; Zero Flag set if nul string
45; Destroyed: None
46GetLenOfString Proc Near Uses ax si
47 xor cx, cx
48 GLOS_StringLoop:
49 lodsb
50 or al, al
51 jz GLOS_EndOfString
52 inc cx
53 jmp GLOS_StringLoop
54
55 GLOS_EndOfString:
56 or cx, cx
57 ret
58GetLenOfString EndP
59
60; In: DS:SI - Pointer to NUL-terminated strings
61; CL - Counter, how many strings to count
62; Out: CX - Length of strings
63; Destroyed: None
64GetLenOfStrings Proc Near Uses bx dx si
65 mov dh, cl
66 xor dl, dl
67 GLOSS_StringsLoop:
68 call GetLenOfString
69 add dl, cl
70 add si, cx
71 inc si
72 dec dh
73 jnz GLOSS_StringsLoop
74 movzx cx, dl
75 ret
76GetLenOfStrings EndP
77
78PRECRAP_Main Proc Near Uses
79 ; First initialize Variable-Area (everything with NUL)
80 mov di, offset BeginOfVariables
81 mov cx, offset EndOfVariables-offset BeginOfVariables
82 xor ax, ax
83 shr cx, 1
84 inc cx
85 rep stosw
86
87 mov VideoIO_Segment, VideoIO_Page0
88
89 ; Calculate Cooper-Bar Tables
90 call FX_CalculateTables
91
92 ; Setup PartitionPointers-Table
93 call PART_CalculateStraightPartPointers
94
95 ; Setup Cyrillic Charset, if needed
96 ifdef TXT_IncludeCyrillic
97 call CHARSET_IncludeCyrillic
98 endif
99
100 call PRECRAP_CheckFor13extensions
101 IFNDEF ReleaseCode
102 ret
103 ENDIF
104 call PRECRAP_CheckConfiguration
105 ; =======================================
106 ; Checks for MBR Virii :) I love that job
107 ; =======================================
108 test CFG_DetectStealth, 1
109 jz PCM_NoStealthDetection
110 call VIRUS_CheckForStealth
111 PCM_NoStealthDetection:
112 test CFG_DetectVirus, 1
113 jz PCM_NoVirusDetection
114 call VIRUS_CheckForVirus
115 PCM_NoVirusDetection:
116 ; ============================================
117 ; Delay for some time and get Strg/Alt State
118 ; ============================================
119 test CFG_CooperBars, 1
120 jnz PCM_ShortDelay
121 mov al, 27 ; About 1.5 seconds
122 test CFG_FloppyBootGetName, 1
123 jz PCM_LongDelay
124 PCM_ShortDelay:
125 mov al, 13 ; shorten delay,if floppy gets accessed
126 PCM_LongDelay:
127 call TIMER_WaitTicCount
128 ; First check, if any normal key got pressed...
129 mov ah, 1
130 int 16h
131 jz PCM_NoNormalKeyPressed
132 ; User doesn't know what to do...or he is crazy <g> so display message
133 mov si, offset TXT_HowEnterSetup
134 call MBR_Teletype
135 mov al, 54 ; about 3 seconds, delay again
136 call TIMER_WaitTicCount
137 PCM_NoNormalKeyPressed:
138 ; Now get keyboard Strg/Alt State
139 mov ah, 02h
140 int 16h
141 mov SETUP_KeysOnEntry, al
142 ret
143PRECRAP_Main EndP
144
145AFTERCRAP_Main Proc Near Uses
146 ; ===================================================
147 ; Now get volume label of FloppyDrive, if wanted...
148 ; ===================================================
149 test CFG_FloppyBootGetName, 1
150 jz ACM_NoFloppyGetName
151 call DriveIO_UpdateFloppyName
152 or ax, ax
153 jnz ACM_NoFloppyGetName
154 ; Try a second time, if it failed to detect the Floppy
155 call DriveIO_UpdateFloppyName
156 ACM_NoFloppyGetName:
157 ret
158AFTERCRAP_Main EndP
159
160PRECRAP_CheckFor13extensions Proc Near
161 mov ah, 41h
162 mov bx, 55AAh
163 mov dl, 80h
164 int 13h
165 cmp bx, 0AA55h
166 je PCCF13E_Found
167 PCCF13E_NotFound:
168 ret
169 PCCF13E_Found:
170 and cx, 1
171 jz PCCF13E_NotFound
172 mov CurIO_UseExtension, 1
173 ret
174PRECRAP_CheckFor13extensions EndP
175
176; Checks Configuration CheckSum...Displays message, if failed.
177PRECRAP_CheckConfiguration Proc Near Uses ds si es di
178 mov si, offset Configuration
179 xor bx, bx
180 mov cx, 5 ; Total of 5 Sectors
181 mov dx, CFG_CheckConfig
182 mov CFG_CheckConfig, bx
183 PCCC_Loop:
184 call MBR_GetCheckOfSector
185 loop PCCC_Loop
186 cmp bx, dx
187 jne PCCC_Failed
188 mov CFG_CheckConfig, dx
189 ret
190 PCCC_Failed:
191 mov si, offset TXT_ERROR_CheckConfig
192 call MBR_Teletype
193 mov si, offset TXT_ERROR_CheckFailed
194 call MBR_Teletype
195 jmp MBR_HaltSystem
196PRECRAP_CheckConfiguration EndP
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